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The effect of chlorine, heat and physical stress on entrained plankton at Koeberg Nuclear Power Station
Bibliography: pages 112-138.
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| Other Authors: | |
| Format: | Thesis |
| Language: | English |
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Department of Biological Sciences
2016
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| _version_ | 1867613217909374976 |
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| access_status_str | Open Access |
| author | Huggett, Jenny A |
| author2 | Cook, Peter |
| author_browse | Cook, Peter Huggett, Jenny A |
| author_facet | Cook, Peter Huggett, Jenny A |
| author_sort | Huggett, Jenny A |
| collection | Thesis |
| description | Bibliography: pages 112-138. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/17079 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:32:38.580Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | Department of Biological Sciences |
| publisherStr | Department of Biological Sciences |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/17079 The effect of chlorine, heat and physical stress on entrained plankton at Koeberg Nuclear Power Station Huggett, Jenny A Cook, Peter Marine plankton - South Africa Nuclear power plants - Environmental aspects - South Africa Chlorine - Physiological effect Copepoda Bibliography: pages 112-138. The large volume of seawater used for cooling at Koeberg Nuclear Power Station contains many planktonic organisms which are exposed to heat, chlorine and physical stress during their passage through the system. Phytoplankton biomass, measured as chlorophyll a, was reduced by an average of 55.32% due to entrainment, and productivity was decreased by 38.30% on average, mainly due to chlorination. Zooplankton mortality averaged 22.34% for all species and 30.52% for copepods, the dominant group. The copepod Paracartia africana was used in laboratory experiments designed to simulate entrainment. Latent mortality was monitored up to 60 hours after a 30-minute application of stress factors (physical stress was not simulated), and approximately 75% of the total mortality occurred within the 30-minute period. Male Paracartia experienced higher mortalities than females. Extrapolation of these results predicts an overall entrainment mortality (including latent mortality) of 40% for copepods and 29.04% for total zooplankton, although the latter cannot be substantiated. Plankton entrainment at Koeberg was not considered to be overly detrimental to the marine environment because of the very localised area affected, rapid dispersion of heat and chlorine, rapid regeneration times of phytoplankton and some zooplankton, low abundance of commercially important species and potential recruitment from the surrounding productive Benguela upwelling region. 2016-02-17T07:15:33Z 2016-02-17T07:15:33Z 1988 Master Thesis Masters MSc http://hdl.handle.net/11427/17079 eng application/pdf Department of Biological Sciences Faculty of Science University of Cape Town |
| spellingShingle | Marine plankton - South Africa Nuclear power plants - Environmental aspects - South Africa Chlorine - Physiological effect Copepoda Huggett, Jenny A The effect of chlorine, heat and physical stress on entrained plankton at Koeberg Nuclear Power Station |
| thesis_degree_str | Master's |
| title | The effect of chlorine, heat and physical stress on entrained plankton at Koeberg Nuclear Power Station |
| title_full | The effect of chlorine, heat and physical stress on entrained plankton at Koeberg Nuclear Power Station |
| title_fullStr | The effect of chlorine, heat and physical stress on entrained plankton at Koeberg Nuclear Power Station |
| title_full_unstemmed | The effect of chlorine, heat and physical stress on entrained plankton at Koeberg Nuclear Power Station |
| title_short | The effect of chlorine, heat and physical stress on entrained plankton at Koeberg Nuclear Power Station |
| title_sort | effect of chlorine heat and physical stress on entrained plankton at koeberg nuclear power station |
| topic | Marine plankton - South Africa Nuclear power plants - Environmental aspects - South Africa Chlorine - Physiological effect Copepoda |
| url | http://hdl.handle.net/11427/17079 |
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